If claims of various individuals are based on the same action or legal grounds and can be secured by the same legal procedure, under Swiss Law a number of people may, in a joinder of parties, undertake legal action (e.g. a bank contravenes investment conditions and owes a number of affected customers compensation for the investment loss. A large number of employees of a company claim for remuneration which the employer maintains he does not owe them). It is also possible to conduct test cases.